4. In Meyer's
expansion valve, the expansion valve is driven by an eccentric having an angle
of advance from

(A) 50°-60°

(B) 60°-70°

(C) 70°-80°

(D) 80°-90°

Answer: Option D

5. When a body
is subjected to transverse vibrations, the stress induced in a body will be

(A) Shear stress

(B) Bending
stress

(C) Tensile
stress

(D) Compressive
stress

Answer: Option B

6. The critical
speed of a shaft with a disc supported in between is equal to the natural
frequency of the system in

(A) Transverse
vibrations

(B) Torsional
vibrations

(C) Longitudinal
vibrations

(D) All of these

Answer: Option A

7. Klein's construction gives a
graphic construction for

(A) Slider-crank
mechanism

(B) Velocity polygon

(C) Acceleration polygon

(D) Four
bar chain mechanism

Answer: Option C

8. In the below
figure, PC is the connecting rod and OC is the crank making an
angle θ with the line of stroke PO and rotates with uniform angular
velocity at ω rad/s. The Klien's acceleration diagram for determining the
acceleration of the piston P is shown by quadrilateral CQNO, if N
coincides with O, then

(A) Acceleration
and velocity of the piston P is zero

(B) Acceleration
and velocity of the piston P is maximum

(C) Acceleration
of the piston P is zero and its velocity is maximum

(D) Acceleration
of the piston P is maximum and its velocity is zero

Answer: Option C

9. The Scott-Russell mechanism
consists of

(A) Sliding
and turning pairs

(B) Sliding
and rotary pairs

(C) Turning
and rotary pairs

(D) Sliding pairs only

Answer: Option A

10. The
displacement of the D-slide valve is __________ the steam lap by a distance known
as lead of the valve.

(A) Greater than

(B) Less than

(C) Equal to

(D) None
of these

Answer: Option A

11. In steady
state forced vibrations, the amplitude of vibrations at resonance is __________
damping coefficient.

(A) Equal to

(B) Directly
proportional to

(C) Inversely
proportional to

(D) Independent
of

Answer: Option C

12. When there
is a reduction in amplitude over every cycle of vibration, then the body is
said to have

(A) Free
vibration

(B) Forced
vibration

(C) Damped
vibration

(D) Under
damped vibration

Answer: Option C

13. Which of the
following statement is correct?

(A) For
constant velocity ratio transmission between two gears, the common normal at
the point of contact must always pass through a fixed point on the line joining
the centers of rotation of gears.

(B) For
involute gears, the pressure angle changes with the change in center distance
between gears.

(C) The
epicyclic gear trains involve rotation of at least one gear axis about some
other gear axis.

(D) All
of the above

Answer: Option D

14. In multi V-belt transmission,
if one of the belt is broken, we have to change the

(A) Broken belt

(B) Broken belt and its adjacent
belts

(C) All the belts

(D) There is no need of changing
any one as remaining belts can take care of transmission of load